Power Quality Analysis for Electric Vehicle Charging and its Mitigation Strategies

Abstract

Electric Vehicle charging from gird may lead to power quality issue in the grid due to AC- DC conversion required to charge Electric Vehicle battery. Thus, a proper power quality analysis is required to study the influence of these issues into the grid system. This paper deals with studying the harmonic distortion injected into the grid supply while charging and discharging an Electric Vehicle.An analysis is done with passive and active filters connected on grid side to find the best mitigation strategy applicable to reduce the influence of harmonic distortion on the grid. As a result of this study, it is found that the passive filter is more suitable for a pre-defined load, while D-Statcom is more suitable for dynamic load conditions.